US1297433A - Saw-gage and jointer. - Google Patents

Description

L. A. AVERY.

SAW GAGE ANDJOINTER.

APPLICATION FILED APR. 11. 1918.

1,297,433. Patented Mar. 18,1919.

Zymcm/A,A very,

INVENTOR,

ATTOR N EY LYMAN A. AVERY, 0F GREEN LAKE, NEW YORK.

SAW-GAGE AND JOINTER.

To all whom it may concern:

Be it known that I, LYMAN A. AVERY, a citizen of the United States, residing at Green Lake, in the county of Fulton and State of New York, have invented a new and useful Saw-Gage and J ointer, of which the following is a specification.

This invention relates to saw gages and jointers.

The primary object is to combine in a single simple and compact device, means for quickly and accurately jointing the teeth of a cross-cut saw through the medium of a file held rigidly at right angles to the device by novel clamps, so that the said teeth may be uniformly filed to an even length, and means for gaging the raker teeth of such saw so that they may bear the proper relation to the cutting teeth of the same.

Another object is to provide in such a device, means for a fine adjustment of the gage plate, in order to subject the raker teeth of the saw to just the right amount of filing, without the necessity of taking extreme care, after the said gage plate is properly set.

A further object is to construct a device of this character which is strong and durable and simple of operation, and which is easily applied to and held in position on the saw for such purposes, and may be readily operated by one unskilled in. the art of filing .the salient features of the invention, as spefically pointed out in the appended claims.

In the drawing, in which like reference characters designate like parts throughout the several figures Figure 1 is a perspective view of the improved device, osition for jointing a saw;

Fig. 2 is a vertical longitudinal sectional view of the same with the gage plate adjusted Specification of Letters Patent.

having a file held in proper Patented Mar. 18, 1919.

Application filed April 17, 1918. Serial No. 229,111.

Fig.- 3 is a horizontal sectional view on the line 33 of Fig. '2;

Fig. 4 is a transverse, vertical section on the line H of Fig. 1.

The saw gage and jointer of the present invention comprises a body member 1, in the form of a block of suitable metal, as cast steel, having a vertically disposed, longitudinal kerf or slot 2, extending from the bottom to within a short distance of the top side thereof, forming opposite sides or wings, the top wall of the slot resting upon the teeth of the saw while gaging.

Each side of the body'member 1 is provided on its exterior with a longitudinal channel 3, thus forming upper and lower spaced bearing surfaces at and 5, respectively, for a purpose to be later explained.

The central portion of the top of the body member is cut away to provide a recess. 6, which extends down somewhat below the upper end of the kerf, or slot 2, and inwardly directed, opposed arms 77 are formed integrally with the terminal portions of the said body member and have their under faces in alinement with and forming oontinuations of the upper end walls of the said kerf, and are spaced from the bottom wall of said recess, as clearly illustrated in Fig. 2 of the drawing.

The space 8, between the inner opposed terminals of the arms 7-7, is ample to permit of the transverse manipulation of an ordinary fiat file fOr the purpose of treating the raker teeth of a saw as will be hereinafter fully described, and the space between the lower faces of the said arms -7-7 and the bottom wall of the'recess 6, is ample for the upward and downward adjustment of the gage plate 9, which is adapted to,

' regulate the amount'of filing necessary to properly gage the said teeth.

Transverse openings 10 are formed in the walls of the body member upon either side of the central kerf or slot for the purpose of lightening the structure, and it will be seen that the device, thus far described, is capable of being manufactured froma single piece or casting, being properly machined to smooth the surfaces and that the same may be produced at a low cost.

The gage plate 9 is of a width equal to the width of the body member 1, and of a length substantially coextensive with the length ofthe recess 6, andis prov-idedwith a t al, longi ud nal sl 11', and rminal Screws. l3, traversing suitable threaded.-

apertures formed in the terminal portions of the gage plate 9, upon either side of the terminal slots 12 therein, are adapted to be regulated to adj ustthe gage plate to anydesired elevation with relation to the bottom of=the=recess'6. These screws are provided with enlarged portions 14, adjacent'to their slotted heads 15, and passed through suitable smooth apertures 16' formed in the arms 7 v 7 andinalinementwith the aforesaid aperturesinthe adjustable gage plate 9, which are adapted to receive the'reduced threaded portions of the screws 13'. The lower terminals ofthe-screws are further-reduced, as at 16, and are adapted to be seated in suitable apertures 17 formed in fhe bottom wall of 'th'e recess 6'of the body-member 1.

The upper enlarged portions of the screws '13,: adjacent to their, heads, and traversing the arms 7-, 7 are provided with circumferential grooves 14%, which are located at substantially the middle of the said arms, when the heads of the screws are contacting with and resting onthe upper face of the-arms. Transversely disposed pins 14 are inserted in suitable horizontally disposed apertures formed inthe arms, and traverse the afore mentioned circumferential grooves 14 in the: screws on that side adjacent to the ends of the body member, ands-act to retain the screws in position with thearm 7--7, while permitting oftheir being turned ineither direction to raise or lower the gage plate.

Thebody member is provided near its terminalsand adjacent to the top thereof, with horizontally disposed, transverse bores l8 for.-th'e reception of'clampingbolts 19,

which are smooth throughout the major por tion of their lengths, and have one end threaded forthe reception of thumb-nuts 20, which are adapted to bear against the adjacent side of the body member, when screwed up,-te effect a longitudinallmovement of the said bolts in order to clamp a file 21.

The: otherends of the clamping bolts 19 are each-bent-at right-angles, as at 22, to formhooks for engaging over the edge of the. file 21, as clearly shown in Fig. 4, and the-endsof said hook portions are provided with terminal lugs 23, ext-ending under the lower face of said file, to prevent the turning of the clamp bolts within their seats and thus becoming disengaged from the file, as will be clearly understood:

'Uponeither face of the: body member 1,

at each end of the recess 6,-and opposite the known as jointing a saw, any flat file of varyingwidths within certain limits. is fitted within the recess formed by the terminalglulg: 23: -provided in the downturned portion 22 of the clamping screws 19, and bearing against t11efi atfac'e4 of' the -body member, above the side channel 3, when the two thumb nuts20 are tightenedto hold the same in place. The said I file 7 is then accu rat'el y positioned at right angles to the: body memberand bearing a-gainst the uirdersides of the clamping bolts, the top of 'thefile being embraced by the bolts and the two edges being engaged respectively by the portions22 "of the bolts and the side of the body. Byplacingthe device in position upon the saw, with the upturned teeth there-'- of beneath the file anclith'e si de ofithe saw bearing against the-upper: and lowe r'u, bean ing surfaces 4'and '5', respectively, the. device may be reciprocated :back and iforthf-to bring:- allof-the-teeth of the saw to unifomnglength, in awell-lmown manner, and the same are filed square, with relation tothe-sides of the saw.

The file and E the-body member form an exact: rightian gle, and by placing thebodymember againstthe sawandho-ldi'ngit: firmly, there is no chance of cuttingone" side of theteetlr lower than :the other, as is thecase witlrsomejoihters;

InEthe operation-of gaging-the saw, the saw is placed within: the central slot or: 'kc'rf 2, the top wall of iwhich rests on the teeth,- with; the raker'-toot'l-1- extending I upwardly through the. slot 11- of thewgage. plate 9', which is adjusted by sired extent, when the toothhmaylbe appropriately filedi by: manipulation 0 1 i the proper file transversely of ithe device and.- be; tween the ends of thefarms 7 7', even=with the topof the gage pl ate, the latterubeing preferably formed of steel, case+hardened-, to withstand the inroads-of the said file.

To ascertain how; much of the raker tooth is beingcut down,one need only measure the.- spa ce' between the underside of athearms 7', and the gage plate, this vbeing shown .-by-the gage marks 24E. The ends of ithei gage. plates move in. close juxtaposition'to'the end walls 'by one unskilledin theartaoibfiling-saws,

and that the fine adjustment of Whichath'e gage plate iscapableepermitss-of:gre'at ac-'- curacy 1n the latter operation. Moreovery-g the screws to the d ethere is no chance of the tool wabbling as it rests down over and upon the saw.

What is claimed is- 1. A saw gage comprising a metallic body;

member having a central longitudinal, vertij cally-disposed slot extending from its bota ends of the screws tom to near its top, for receiving a sawri. for gaging, the upper ed to rest upon the saw wall of the slot adapt-1;;

circumferential grooves, teeth, said bodylfdisposed pins traversing movement, verticallydisposed adjusting screws traversely the said arms and having threaded engagement with the gage plate, the lower ends of the screws being seated in the bottom wall of said recess, the upper where traversing the said arms being unthreaded and provided with and transversely the said arms in a member having a central recess formed in itsii lhorizontal plane and intersecting the grooves upper side and intersecting the said slotgin the screws to prevent the1r upward or arms formed integrally with the body memzdownward movement while turning the same said arms, and substantially coextensive with? screwslfi'ung surfaces, horizontally-disposed clampthe length and width of said recess,

her and extending into the recess toward theb for adjusting the gage center thereof, a gage plate loosely mounted for upward and downward movement in thee recess between the bottom thereof and the}? plate.

3. In a saw j ointer, a body member having a horizontally-disposed channel formed in the outer side between the top and bottom,

said channel defining upper and lower beartraversing the arms and rotating therein and gs'ing bolts provided in the ends of said memhaving threaded engagement with the plate, said plate having a central slot for receiv-" ing a raker tooth of a saw for gaging the same, and having its ends moving in juxtaposition with the opposite end walls of said recess, and graduations on said end walls to determine the adjustment of said plate.

2. A saw gage comprising a body member composed of a single elongated casting provided with a vertically-disposed central kerf or slot adapted to straddle a saw for gaging, the upper wall of the slot adapted to rest upon the teeth of the saw, a central recess formed in the upper side of the member and intersecting the said slot, inwardly directed integral arms extending into the recess and spaced from the bottom wall of said recess, a gage plate arranged within the recess below the arms for up-and-down Copies of this ber above the upper bearing surface, said bolts being provided with thumb nuts threaded on one of their ends, and having at their other ends hooks provided with terminal lugs, which are adapted to engage under the lower face of a file, the latter being embraced at its upper face by the bolts and being held with its inner edge bearing directly against the body member, whereby the file is held at exactly right angles to the body member.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witness.

LYMAN A. AVERY.

Witnesses:

WILLIAM AVERY, JAMES WALSH.

the Commissioner of Iatents,

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